1. Volume 12, Issue 4, Pages 751-758 (April 2015)
Performance of a novel left ventricular lead with short bipolar spacing for cardiac resynchronization therapy: Primary results of the Attain Performa Quadripolar Left Ventricular Lead Study 
George H. Crossley, MD, FHRS, FACC, CCDS, Mauro Biffi, MD, Ben Johnson, MD, FACC, Albert Lin, MD, FACC, Daniel Gras, MD, Azlan Hussin, MD, FHRS, FACC, Allen Cuffio, MD, FACC, Jack L. Collier, MD, Mikhael El-Chami, MD, FHRS, FACC, Shelby Li, MS, Keith Holloman, BS, Derek V. Exner, MD, MPH, FHRS, FACC, FRCPC 
Heart Rhythm 
Volume 12, Issue 4, Pages (April 2015)
DOI: /j.hrthm
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2. Figure 1
(A) Model 4298 canted lead, (B) model 4398 straight lead, and (C) model 4598 S-shaped lead (Medtronic). The straight lead is tined. In each lead, the interelectrode distance is 21 mm between the first and second electrodes and between the third and fourth electrodes. The interelectrode distance between the second and third electrodes is 1.3 mm.
Heart Rhythm  , DOI: ( /j.hrthm )
Copyright © 2015 Heart Rhythm Society Terms and Conditions

3. Figure 2 Enrollment flowchart.
Heart Rhythm  , DOI: ( /j.hrthm )
Copyright © 2015 Heart Rhythm Society Terms and Conditions

4. Figure 3 Percentage of patients with a PCT of ≤2.5 V for each lead.
Heart Rhythm  , DOI: ( /j.hrthm )
Copyright © 2015 Heart Rhythm Society Terms and Conditions

5. Figure 4
Graph of the freedom from a left ventricular (LV) lead–related complication.
Heart Rhythm  , DOI: ( /j.hrthm )
Copyright © 2015 Heart Rhythm Society Terms and Conditions

6. Figure 5
Rate of phrenic nerve stimulation (PNS) with pacing at 8 V is significantly less when the short bipolar electrodes are used. LV = left ventricular; RV = right ventricular.
Heart Rhythm  , DOI: ( /j.hrthm )
Copyright © 2015 Heart Rhythm Society Terms and Conditions